Primatene Mist contains the active ingredient epinephrine inhalation aerosol to breathe in and help those with asthma relief when it’s needed the most. The Primatene inhaler is the only FDA-approved . over-the-counter inhaler for temporary relief of mild symptoms of intermittent asthma including wheezing . tightness of chest and shortness of breath. It has 160 metered sprays and provides 0.125 mg per spray to help those with symptoms at home or on the go. With a new formulation . this product is fast-acting and will help make breathing easier. For more advanced symptoms or prolonged sufferers . a medical professional should be seen. This item is designed for oral inhalation use only.